{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:AU6YGSCQVGI7AVGW45HZDTO7UG","short_pith_number":"pith:AU6YGSCQ","canonical_record":{"source":{"id":"2004.10209","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-04-21T18:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"53a937148fc47bdaedb4cdc2a51aa485973760646bf8476f88b8232839c3f2b2","abstract_canon_sha256":"2ad5366a7a353d76b6c1824db6108309df64beaed4e259883f08ab5310e15508"},"schema_version":"1.0"},"canonical_sha256":"053d834850a991f054d6e74f91cddfa1aa3a86cb8ce9050ecbf202d1e142544c","source":{"kind":"arxiv","id":"2004.10209","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.10209","created_at":"2026-07-05T01:27:22Z"},{"alias_kind":"arxiv_version","alias_value":"2004.10209v2","created_at":"2026-07-05T01:27:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.10209","created_at":"2026-07-05T01:27:22Z"},{"alias_kind":"pith_short_12","alias_value":"AU6YGSCQVGI7","created_at":"2026-07-05T01:27:22Z"},{"alias_kind":"pith_short_16","alias_value":"AU6YGSCQVGI7AVGW","created_at":"2026-07-05T01:27:22Z"},{"alias_kind":"pith_short_8","alias_value":"AU6YGSCQ","created_at":"2026-07-05T01:27:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:AU6YGSCQVGI7AVGW45HZDTO7UG","target":"record","payload":{"canonical_record":{"source":{"id":"2004.10209","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-04-21T18:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"53a937148fc47bdaedb4cdc2a51aa485973760646bf8476f88b8232839c3f2b2","abstract_canon_sha256":"2ad5366a7a353d76b6c1824db6108309df64beaed4e259883f08ab5310e15508"},"schema_version":"1.0"},"canonical_sha256":"053d834850a991f054d6e74f91cddfa1aa3a86cb8ce9050ecbf202d1e142544c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:27:22.759085Z","signature_b64":"bpwVjUxgy7Q/SiCXG9Fnvo2Bu2gkGqBEkjplDW7GeQ9r4zk4/JU0begmEXIGc4xDYRtKFdECB0XNvySZl+UKDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"053d834850a991f054d6e74f91cddfa1aa3a86cb8ce9050ecbf202d1e142544c","last_reissued_at":"2026-07-05T01:27:22.758681Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:27:22.758681Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2004.10209","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:27:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E0gn4yww4ML2szLaFh4iYtXKJJ0nCMq4DeXCTpvyI4jocVl8yvCKoU3f4mjRNvsN00AoiI56lXs6l7ZEasafDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T07:01:28.711938Z"},"content_sha256":"f63ac42931c02bfcc80c7a76fc35f40924e2ec4980bfa4dd2cac1d3cf08f84e6","schema_version":"1.0","event_id":"sha256:f63ac42931c02bfcc80c7a76fc35f40924e2ec4980bfa4dd2cac1d3cf08f84e6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:AU6YGSCQVGI7AVGW45HZDTO7UG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Model-Insensitive Baryon Acoustic Oscillation Feature in the 21 cm Signal from Reionization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Anson D'Aloisio, Christopher Cain, Hy Trac, Matthew McQuinn, Vid Ir\\v{s}i\\v{c}","submitted_at":"2020-04-21T18:00:01Z","abstract_excerpt":"We examine the impact of baryon-dark matter relative velocities on intergalactic small-scale structure and the 21 cm signal during reionization. Streaming velocities reduced clumping in the intergalactic medium (IGM) on mass scales of $\\sim 10^4 - 10^8$ M$_{\\odot}$. This effect produced a distinct baryon acoustic oscillation (BAO) feature in the 21 cm power spectrum at wave numbers $k\\sim 0.1$ h/Mpc, near which forthcoming surveys will be most sensitive. In contrast to the highly uncertain impact of streaming velocities on star formation, the effect on clumping is better constrained because it"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.10209","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2004.10209/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:27:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Dhw5CR0cSsCN6+gXc8wjKjLTuULHUiDDzTFWDwY8qdCe9IAAGCkaSahtNlFdV8/DjGCMOeSE9MeFzdbssT8nBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T07:01:28.712454Z"},"content_sha256":"4463a86c4570fa726fe2e886957443bf0bfc8ca3d686ee4df0a1f14dd5f4f4f3","schema_version":"1.0","event_id":"sha256:4463a86c4570fa726fe2e886957443bf0bfc8ca3d686ee4df0a1f14dd5f4f4f3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AU6YGSCQVGI7AVGW45HZDTO7UG/bundle.json","state_url":"https://pith.science/pith/AU6YGSCQVGI7AVGW45HZDTO7UG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AU6YGSCQVGI7AVGW45HZDTO7UG/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-15T07:01:28Z","links":{"resolver":"https://pith.science/pith/AU6YGSCQVGI7AVGW45HZDTO7UG","bundle":"https://pith.science/pith/AU6YGSCQVGI7AVGW45HZDTO7UG/bundle.json","state":"https://pith.science/pith/AU6YGSCQVGI7AVGW45HZDTO7UG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AU6YGSCQVGI7AVGW45HZDTO7UG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:AU6YGSCQVGI7AVGW45HZDTO7UG","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"2ad5366a7a353d76b6c1824db6108309df64beaed4e259883f08ab5310e15508","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-04-21T18:00:01Z","title_canon_sha256":"53a937148fc47bdaedb4cdc2a51aa485973760646bf8476f88b8232839c3f2b2"},"schema_version":"1.0","source":{"id":"2004.10209","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.10209","created_at":"2026-07-05T01:27:22Z"},{"alias_kind":"arxiv_version","alias_value":"2004.10209v2","created_at":"2026-07-05T01:27:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.10209","created_at":"2026-07-05T01:27:22Z"},{"alias_kind":"pith_short_12","alias_value":"AU6YGSCQVGI7","created_at":"2026-07-05T01:27:22Z"},{"alias_kind":"pith_short_16","alias_value":"AU6YGSCQVGI7AVGW","created_at":"2026-07-05T01:27:22Z"},{"alias_kind":"pith_short_8","alias_value":"AU6YGSCQ","created_at":"2026-07-05T01:27:22Z"}],"graph_snapshots":[{"event_id":"sha256:4463a86c4570fa726fe2e886957443bf0bfc8ca3d686ee4df0a1f14dd5f4f4f3","target":"graph","created_at":"2026-07-05T01:27:22Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2004.10209/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We examine the impact of baryon-dark matter relative velocities on intergalactic small-scale structure and the 21 cm signal during reionization. Streaming velocities reduced clumping in the intergalactic medium (IGM) on mass scales of $\\sim 10^4 - 10^8$ M$_{\\odot}$. This effect produced a distinct baryon acoustic oscillation (BAO) feature in the 21 cm power spectrum at wave numbers $k\\sim 0.1$ h/Mpc, near which forthcoming surveys will be most sensitive. In contrast to the highly uncertain impact of streaming velocities on star formation, the effect on clumping is better constrained because it","authors_text":"Anson D'Aloisio, Christopher Cain, Hy Trac, Matthew McQuinn, Vid Ir\\v{s}i\\v{c}","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-04-21T18:00:01Z","title":"A Model-Insensitive Baryon Acoustic Oscillation Feature in the 21 cm Signal from Reionization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.10209","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:f63ac42931c02bfcc80c7a76fc35f40924e2ec4980bfa4dd2cac1d3cf08f84e6","target":"record","created_at":"2026-07-05T01:27:22Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"2ad5366a7a353d76b6c1824db6108309df64beaed4e259883f08ab5310e15508","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-04-21T18:00:01Z","title_canon_sha256":"53a937148fc47bdaedb4cdc2a51aa485973760646bf8476f88b8232839c3f2b2"},"schema_version":"1.0","source":{"id":"2004.10209","kind":"arxiv","version":2}},"canonical_sha256":"053d834850a991f054d6e74f91cddfa1aa3a86cb8ce9050ecbf202d1e142544c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"053d834850a991f054d6e74f91cddfa1aa3a86cb8ce9050ecbf202d1e142544c","first_computed_at":"2026-07-05T01:27:22.758681Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:27:22.758681Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bpwVjUxgy7Q/SiCXG9Fnvo2Bu2gkGqBEkjplDW7GeQ9r4zk4/JU0begmEXIGc4xDYRtKFdECB0XNvySZl+UKDg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:27:22.759085Z","signed_message":"canonical_sha256_bytes"},"source_id":"2004.10209","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f63ac42931c02bfcc80c7a76fc35f40924e2ec4980bfa4dd2cac1d3cf08f84e6","sha256:4463a86c4570fa726fe2e886957443bf0bfc8ca3d686ee4df0a1f14dd5f4f4f3"],"state_sha256":"5ed5483124e6b56e903a24d4496280aba8d42b6bec7733428c2822d193217a33"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i0FVtIVInBfI6oeeZ1Hr23wp0ojx9Uj/p7voa5YCChtwv4RZut5m971Mm1zaseutUeI++b7ZKAibzwK+dylfDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T07:01:28.715770Z","bundle_sha256":"75492ac41973d05befbf4e14e15f7974d38b92710013242105fefbf49311ad13"}}